韩漫画免费在线观看入口,国产精品欧美久久久久久久,99欧美精品一区二区三区,日韩欧激情一区二区三区

產(chǎn)品列表PRODUCTS LIST

首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測(cè)管>氣體快速檢測(cè)管>187S礦物油精(一種溶劑油) 石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit

礦物油精(一種溶劑油) 石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit

簡(jiǎn)要描述:

總烴氣體檢測(cè)管187S GENERAL HYDROCARBONS,礦物油精(一種溶劑油) 石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit氣體檢測(cè)管,礦物油,2.5-40mg/l檢測(cè)。www.yd666.com

更新時(shí)間:2025-07-02

在線留言
礦物油精(一種溶劑油)  石油溶劑油,石油醚,礦精,礦油精,松香水 mineral spirit

礦物油精(一種溶劑油)  石油溶劑油,石油醚,礦精,礦油精,松香水187S mineral spirit氣體檢測(cè)管,礦物油,檢測(cè)范圍2.5-40mg/l

Tube 87S

1. PERFORMANCE
1) Measuring range :50-1,400 ppm(as n-Hexane)
Number of pump strokes 1(100ml)
2 pump strokes(200ml)are required for Kerosine and Mineral tupentine
determination.
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :5 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(refer to "Table 2. Temperature CorrectionTable")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change :Orange→Yellowish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%(Controlled on n-Hexane)
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH3(CH2)4CH3+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1400
1200
1000
800
600
400
200
100
50
ppm
????
????
187S GENERAL HYDROCARBONS
Substance Interference Coexistence
The bottom of the discoloured
Aromatic hydrocarbons layer is changed to Black and
higher readings are given.
It has no influence on readings even if Alcohols, Esters or Ketones each co-exists up to 6%.
(NOTE)
1)Determine the concentration of objective gas by multiplication with the figure shown in Table 1 after
temperature correction.
Example)For measuring Heptane at 10℃ of temperature
Reading concentration :600 ppm
Concentration on temperature correction :660 ppm
Concentration of Heptane :990 ppm
Table.2 Temperature Correction Table (20℃standard)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
1400 1630 1530 1400 1270 1180
1200 1400 1320 1200 1090 1010
1000 1170 1100 1000 910 840
800 930 870 800 720 670
600 700 660 600 550 500
400 460 430 400 360 330
200 220 210 200 180 170
100 100 100 100 100 100
Unit:ppm
Name of Gas Figure Name of Gas Figure
Isobutane 0.8 Heptane 1.5
Pentane 0.8 Octane 2.0
n-Hexane 1.0 Cyclohexane 1.0

大鸡巴操小嫩穴视频在线| ww国产内射精品后入国产| 中文字字幕在线中文乱码| 亚洲阿v天堂在线| 日本国产精品免费在线观看| av无码av天天av天天爽| 亚洲人色婷婷成人网站在线观看| 天天日日操骚逼| 国产亚洲精品综合一区91| 国产无圣光一区福利二区| 国产三级无遮挡在线播放| 亚洲av男人的天堂久久久| 亚洲一区二区三区久久受| 国产精品盗摄!偷窥盗摄| 中国av电影一区二区三区| 天堂在线www| 黄色三级亚洲男人的天堂| 日本大尺度在线观看网址| 鸡巴操小穴视频无码高清| 久久久久精品国产亚洲av无码| 日韩精品一区二区三区毛片| 国产真实乱人视频在线看| 国产精品久久久久久人妻| 91嫩草久久久天美传媒| 亚洲色精品VR一区二区| 91自拍偷拍一区二区三区| 免费久久精品国产自在在线| 一级高清片免费欧美一级| 久久久久久91久久久久| 欧美性大战。久久久久久| 久久机热/这里只有精品| 人妻人人妻天天操天天爽| 国产又色又爽又黄刺激在线观看| 99热这里只有精品23| 啊啊啊好大好爽操我视频| 人久久精品中文字幕无码| 国产无码免费视频在线 | h版欧美一区二区三区四区| 欧美成人看片一区二区三区| 成人区人妻精品一区二区| 国产真实乱人偷精品视频免费|